Ash-sifter.



l. W. GRUNDORF.

ASH SIFTER.

APPLICATION FILED MAY 5, I913. L1$5JU% Patented Apr. 13, 1915.

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HIE NOR/2'15 PETERS ca. FHOTC LVTHO.. WASHINGTON n, c.

J. W. GRUNDORF.

ASH sums. 7 APPLICATION FILED MAY 5. I913.

' Patented Apr. 13, 1915.

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THE NORRIS PETERS CO). PHOTO-LITHO WASHINGTONv By C J. W. GRUNDORF.

ASH SIFTER.

APPLICATlON FILED MAY s 1913.

mmlm Patented Apr. 13, 1915.

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THE NORRIS PETERS c0.. PHOTc-LITHQ. WASHING TON. D. c

JOHN W. GRUNDORF, OF ST. LOUIS, MISSOURI.

ASH-SIFTER.

Specification of Letters Patent.

Patented Apr. 13, 1915.

To all whom it may concern: 7

Be it known that I, JOHN W. GRUNDORF, a citizen of the United States,and resident of St. Louis, Missouri, have invented certain new anduseful Improvements in Ash- Sifters, of which the following is aspecification.

This invention relates to improvements in ash sifters and has for itsobject a drum located in a sealed compartment and a receptacle forreceiving the ashes and dust removed from the drum during its rotation,and a means for automatically opening the drum to remove the particlesof coal after the ashes have been thoroughly sifted.

A further object of my invention is to construct a device comprising aframe, a housing supported thereby, a rotating reticulated drum mountedin the housing in which the ashes are placed, and a detachablereceptacle suspended beneath the housing for receiving the ashes andalso to receive the particles of coal after the ashes have been removedtherefrom.

Figure 1 is a vertical sectional view showing my invention. Fig. 2 is acombination sideand cross-sectional view of the same. Fig. 3 is a detailsectionalview showing the lever mechanism and contacts by which the dooror cover of the drum is automatically opened when reversing the drum inorder to remove the un-sifted contents. Fig. 4 is a detail perspectiveview of the latch made use of for holding the drum in rigid position.Fig. 5 is an enlarged detail sectional view of the cleat made use of insupporting the reticulated material on the drum. Fig. 6 is a detailperspective View of the stop made use of for limiting the movement ofthe drum cover. Fig. 7 is a top plan view with the cover removed. Fig. 8is a detail side elevation of one of the drum heads. Fig. 9 is a detailend view with a part broken away and in section showing the inclinationand the bottom edge 11 thereof is terminated into a projection with itsextreme bottom edge looped as indicated by the numeral 12 in which issupported a strip of spring material 13 which acts as a contact strip tocomplete a perfect connection between the same and the sides 14 of theash receptacle 15 suspended beneath the housing. This contact orconnection prevents the dust from sifting through and escaping into theapartment in which the machine is operated.

The ash receptacle 15 is provided on its upper edge with a stiffeningstrip 16, and on each end with a handle 17. On the stiffening strip andabove both of the handles 17 is located a projection 18 with whichcontacts the teeth 19 of the spring latches 20; these latches beingfirmly secured by means of rivets or otherwise to the sides of thehousing 7, and the free ends 21 of the spring latches are in suchposition as to permit the fingers when grasping the handle to contactwith the same, and by outward pressure remove the teeth 19 from theprojections permitting the ash receptacle 15 to be removed from thehousing.

In the housing 7 is located a rotating drum 22 consisting of two heads23 rigidly mounted upon a shaft 24:, which first is sup ported in thesides of the housing 7 and on said shaft, and firmly secured to theinner side of the drum heads are castings 25, by which said heads arefirmly supported. The heads 23 are concave in form, and the edges areprovided with flanges 26 forming a groove 27 in which the sliding door28 is seated and permitted to operate. To each of the heads, andextending the length of the drum is attached a strip of reticulatedmaterial 29 such as a heavy woven wire screen of a mesh to properlyseparate the un burned particles of coal from the ashes. Thisreticulated material extends around the entire periphery with theexception of approximately one-fourth thereof, and this uncoveredportion acts as the inlet and outlet for the material, and this openingis covered or closed by means of the sliding door 28, which is alsoprovided with reticulated material 30, the ends fastened to bars 31;these bars are permitted to slide in the groove 27 formed in the flangesand its movement when open is limited by means of a stop 32 formed on astiffening rib 33 located on the inner periphery of the reticulatedmaterial. This strip is centrally located and is arranged of anydesirable width.

- On the free or opposite end of the door, and

on the cross bar'31 is'located a handle 34, provided with a spring latch35, the tooth of which is arranged to communicate with a receivingmember36 formed onthe stiffening rib 37; by this means the door is heldin closed position while the drum is in rotation.

In the housing 7, and to oneside thereof is located an operating lever38, which extends through a slot 39 formed in the side of the housing,said lever being provided with notches 40 which are arranged to engagewith the material forming the housing, and by which the lever is held inits desired set position; this lever is pivotally connected to a pair ofcurved vreleasing arms 41 pivoted at their upper endsto the housing; thelower ends formed into a hook' 42 which when in position as shown bysolid lines in Fig. 3, are in direct line with the movement "shiftingprocess is in action,.the releasing of. the projections 43 locatedonfthe sliding door, and when the drum is rotated in re verse direction,the projections 43 will contact "with the 'hooksand therebyautomatically: open the door and stop the drum with its opening at thebottom, thereby permittingv the contents to pass into the'ash receptacle15 located beneath the'structure. Duringthe rotation of the drum,and-while the arms 41 are placed in a tilted position as shown by dottedlines in Fig. 3,thus reniov ing the same out of the path of travel ofthe projections 43. In each of thedrum heads '23 are located deflectors44, which are tilted toward the center-and the purpose of which is todirect the coal and ashes toward the reticulated surface while the drumis in rotation.

On the housing is pivotally located a-locle 7 ing device 45 pivoted tothe casing at the u I point indicated by the numeral 46, its free endbent approximately at right angles and provided with a shoulder 47 whichis designed to fitinto a groove or slot cut into the drum head, and thisstructure is used to hold the drum in rigid position while the ashes arebeing placed therein, and after the provide a cover 48, the ends bentdown- Wardlyforming a looped flange 49, and in the same are strips ofinwardly bent spring material 50, the free end contacting'with the upperedge of the housing making an absolutelytight and dustproof joint.

' Having 'fully described my invention what I claim is:

' An ash sitter comprising a rotating drum consisting of solid enddisks,reticulatcd material forming a cylinderand connected to the inner.edges ofthe enddisks; a sliding cover formingpart of the periphery ofthe drum, the edges of the solid ends being provided with groovesinwhich the cover operates, a crank shaft supporting the drum incombination with a housing in which the drum is axially mounted, andalever 'mechanism arranged in proper relation with the drum forautomatically opening the doorof Copies otthis patent may be obtainedfor five cents each, by addressing the Commissioner of Patents,

Washingtomfi. C.

